Calculators / FREE ONLINE TOOL
Online GST & Profit Margin Calculator for Invoices
Add or remove GST and calculate profit.
- 1Enter the amount
- 2Choose rate and calculation
- 3Read the breakdown
GST & Profit Calculator
Free · No signup
Net Amount
₹10,000
GST (18%)
₹1,800
Total Invoice
₹11,800
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ABOUT THIS TOOL
Why use this tool?
Manual GST math often leads to rounding errors on invoices. This client-side utility provides instant verified breakdowns for CGST, SGST, and net totals in milliseconds.
Frequently Asked Questions
How is GST calculated on exclusive amounts (adding GST)?
Formula: GST Tax = (Base Amount × GST Slab) / 100. Total Invoice = Base Amount + GST Tax.
How do you extract GST from an inclusive total (reverse GST)?
Formula: Base Amount = (Total Bill × 100) / (100 + GST Slab). GST Tax = Total Bill - Base Amount.
Which GST rate applies to web design and IT software services?
In India, web design, website development, software consulting, and IT services are categorized under SAC code 998314 and taxed at the standard 18% GST rate.